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| problem sending msgs containing numbers to HOST |
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| carlogol |
 Posted: Mon Feb 17, 2003 9:16 am Post subject: problem sending msgs containing numbers to HOST |
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Newbie
Joined: 17 Feb 2003
Posts: 6
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Hi everybody
I am rather new to MQ, so I apologize if my question may seem ... stupid 
Anyway, I have to write some java classes to send messages to a HOST system from a WinNT system via MQ.
The problem is: I can send string msgs correctly (channel conversion is ON, msg format is MQFMT_STRING) and ASCI<->EBCIDC conversion is handled gracefully. But... if these messages contains numbers, something goes wrong (ehm... maybe I do something wrong) and the HOST system does not read the same number I sent.
For instance, I try to send data which "reflects" the following cobol copybook:
ID-STRUT PIC X(04)
SENDER_APP PIC X(20)
LENGTH PIC S9(09)
...
The problem is... if I set the length field to 35678 with a call to writeInt4(), the cobol program reads another value.
Please... help me!!!
Thanks in advance
Carlo |
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| RogerLacroix |
| Posted: Mon Feb 17, 2003 10:11 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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Hi,
To do what you ask requires either a transformation tool or a message exit. WMQ does not understand where one field (i.e. string) ends and the another field begins (i.e. binary data).
The simplest way to handle this is to convert everything to text. Then let WMQ do the convert for you. Tell your COBOL programmer to change the PIC X variables to display field variables.
later
Roger...
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| carlogol |
| Posted: Tue Feb 18, 2003 1:11 am Post subject: I wish it would be so easy... |
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Newbie
Joined: 17 Feb 2003
Posts: 6
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Thanks for your answer.
The problem is, the COBOL program cannot be changed at all!!! We have to deal with cobpybook of that kind (strings AND binary).
So... what can I do?
Perhaps... do not have MQ Server translate msg data, but convert with a program EXIT? Can you point me to some samples/tutorial/docs to see how this can be done?
Thanks a lot |
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| bower5932 |
| Posted: Tue Feb 18, 2003 4:47 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| Check out Chapter 11 of the Application Programming Guide. It is on writing data-conversion exits. |
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| carlogol |
| Posted: Tue Feb 18, 2003 5:10 am Post subject: |
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Newbie
Joined: 17 Feb 2003
Posts: 6
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Chapter 11? Ok...
Thanks again |
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